The 43-year-old No Doubt
singer flaunted her taught tummy in the white criss-cross halter top
and black high-waisted pants. She completed her look with an
appropriately blingy mirror belt, Giuseppe Zanotti sandals and black clutch.

Rihanna donned the same look from the French Fashion House last December during a performance on the German variety show "Wetten Das." She accessorized with a gold Chanel chain belt and Manolo Blahnik heels.

This
is a close call for us, as both performers have the sexy swagger to
pull off this look. But we have to give the nod to Gwen, who's been
rocking the midriff look for 15+ years. Her belt seems to fit this look
better, too. And we're loving the ruby red lip and nails against her
fair skin and platinum hair.

It's your vote that counts, though. Click on the "Launch Gallery" button above and tell us who wore it better!